Two coherent point sources S1 and S2 are separated by a small distance 'd' as shown. The fringes obtained on the screen will be:
A
points
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B
straight lines
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C
semi-circles
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D
concentric circles
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Solution
The correct option is D concentric circles These will be concentric circles as the path difference at all points on the screen at an equal distance from the centre of the screen remains same.